Abel-mizraim, that is, the mourning of the Egyptians.
Related Commentaries of Genesis 50:11
Genesis 50:11
11 And when the inhabitants of the land, the Canaanites, saw the mourning in the floor of Atad, they said, This is a grievous mourning to the Egyptians: wherefore the name of it was called Abelmizraim,b which is beyond Jordan.